Hannover 2020 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 39: Posters: Quantum Optics and Photonics III
Q 39.26: Poster
Mittwoch, 11. März 2020, 16:30–18:30, Empore Lichthof
Towards low-loss electrooptical modulators in LiNbO3 for quantum-optics applications — •Felix vom Bruch, Raimund Ricken, Christof Eigner, Harald Herrmann, and Christine Silberhorn — Universität Paderborn, Warburger Str. 100, 33098 Paderborn
The interest in research on quantum technologies and its applications has been steadily increasing during the last decades and an end to this progress is not yet in sight. Many of the most promising applications are based on using light and its properties for quantum information processing and quantum computing. Recent developments in integrated quantum optics provide multi-functional components, such as converters and modulators, allowing an effective reduction of setup footprints accompanied with active tunability and an increase in performance. The usage of the material LiNbO3 enables one to build a variety of passive and active integrated components, based on its large nonlinearity and the possibility of producing high quality low-loss waveguides. In the single photon regime, for example for frequency conversion or modulation, the importance of low-loss devices increases tremendously. Here, we present our latest activities on obtaining low optical losses in active devices, while optimizing the device architecture in terms of modulation performance. At this point we focus on the geometry of the electrodes relative to the crystal orientation. The built devices are envisaged to combine the advantages of conventional low loss bulk modulators with the fast switching of integrated devices, building a foundation of novel programmable quantum networks.